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Idameresshdk Lake Water Temperature

Idameresshdk Lake in Lake County, Florida typically sits around 84°F at the surface in September — warmest in Jul (~89°F) and coldest in Jan (~64°F). That is a typical value for the month, not a live reading.

Typical in September
84°F
Warm
Summer average
87°F
Warmest (Jul)
89°F
Coldest (Jan)
64°F

Typical water temperature by month

Jan
64°
Feb
68°
Mar
72°
Apr
77°
May
82°
Jun
86°
Jul
89°
Aug
86°
Sep
84°
Oct
77°
Nov
71°
Dec
67°

Typical surface water temperature by month, from 129 field readings (20102025) via the EPA Water Quality Portal. Months with too few readings are left blank.

Is Idameresshdk Lake warm enough to swim?

At its summer peak (~87°F): Warm

Very comfortable for swimming. Warm surface water can also favor blue-green algae in nutrient-rich lakes, so check for advisories before you go in.

Want more than temperature? Idameresshdk Lake water quality: clarity, algae, phosphorus, depth, fish species, and current advisories, all on one page.

Where to stay near Idameresshdk Lake

Planning a swim or lake trip? Compare cabins, lodges, and vacation rentals near Idameresshdk Lake — live availability and prices. Switch the map to Satellite to see the lake and how close each stay is to the water.

Top-rated places to stay near Idameresshdk Lake

Prices for Sep 18–20, 4 adults. Change dates on the map below.

Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.

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Frequently asked questions

What is the water temperature of Idameresshdk Lake?

Idameresshdk Lake typically sits around 84°F at the surface in September, from 129 EPA Water Quality Portal field readings (2010–2025). That is a typical value for the month, not a live reading.

When is Idameresshdk Lake warmest?

Surface water at Idameresshdk Lake is typically warmest in July, reaching about 89°F. Lake surface temperature lags air temperature by several weeks, so the warmest water usually arrives in mid-to-late summer even though the hottest air can come earlier.

Is Idameresshdk Lake warm enough to swim?

At its typical summer peak of about 87°F, Idameresshdk Lake rates as "warm" for swimming. Very comfortable for swimming. Warm surface water can also favor blue-green algae in nutrient-rich lakes, so check for advisories before you go in.

Where does this Idameresshdk Lake water temperature data come from?

Every temperature on this page is a typical (climatological) value computed from real surface-water field readings collected by state and federal agencies and published through the EPA Water Quality Portal — 129 readings from 3 monitoring stations between 2010 and 2025. They describe what is typical for each month, not the temperature right now.

About this data

Water temperatures are a climatology — the typical value for each month, averaged from real surface-water field readings collected by state and federal agencies and published through the EPA Water Quality Portal. They tell you what to expect, not the temperature at this moment. Actual conditions vary with recent weather, depth, and time of day.